Improvement in mole-plows



M. BALES.

Mole-Plow.

No. 22,928. Patented Feb. 15, 1859.

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UNITED STATES PATENT OFFICE.

MOSES BALES, OF BIG PLAIN, OHIO IMPROVEMENTINMOLE-PLOWS Specificationforming part of Letters Patent No. 22,928, dated February 15, 1859.

inafter described, by means of which I am enabled to arrange one or moreplows upon a cutting-shaft in such manner-as to produce drains at anydesired depth from the surface of the a Figure 1. isa perspective viewof my improvement, showing the peculiar construction of the mole-plowsand their arran gemcnt upon the cutting-shaft. Fig. 2 is a side view ofthe moleplow, showing the convex elevation of the hinged cap. Fig. 3 isa top view of the moleplow, showing the device for securing the same tothe cutting-shaft, the hinged cap being removed.

A is a cutting-shaft, intended for attachment in the ordinary manner toa beam at its upper end, and formed ofsuitable metal, with nearly acutting-edge at its forward part, so that it may pass easily through thesoil and from its center to its after edge its sides converge, so as toleave little opening in the soil after its passage.

D D are adjustable mole-plows, formed of suitable metal, with sides openat the heel,

bulging at d, fitting closely the shaft A, and converging and unitingtoward the cuttingpoint (1. The bulge d is formed for the purpose ofefiecting lateral pressure, so that the sides of the drain may be leftcompressed and smooth after the passage of the plows 1) D.

g is a cap, hinged to the plows D by means of the bolt (1, formed withthe flange g to cover the heel of the plows D, and with a convexelevation for the purpose of affording upward pressure, so that theopening in the soilcaused by the passage of the shaft A may be closedand the top of the drain left compressed and smooth, while at the bottomof the drain the soil receives no pressure, and is left loose aft-erthepassage of the shaft A.

e is a right-and-left screw, formed to work into both sides of themole-plow at its heel, and by means of-which theplows D may besecured toor released from the shaft A, when required, for repairer adjustment.One or both themoleplows D may be used and one or both adjusted to thedepth required for the drain. 7

What I claim as my invention, and desire to secure by Letters Patent,is-

The adjustable mole-plows D d d d" g g e upon a cutting-shaft, A,arranged and operating substantially as and for the purpose set forth.

In testimony of which invent-ion I have hereunto set my hand.

MOSES BALES.

Witnesses H. E. CLIFTON, F. A. MCDOWELL.

